Modifications of grain-boundary structure by friction stir welding in the joint of nano-structured oxide dispersion strengthened ferritic steel and reduced activation martensitic steel

被引：22
作者：
Han, Wentuo [1 ]
Chen, Dongsheng [2 ]
Ha, Yoosung [1 ]
Kimura, Akihiko [1 ]
Serizawa, Hisashi [3 ]
Fujii, Hidetoshi [3 ]
Morisada, Yoshiaki [3 ]
机构：
[1] Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan
[2] Kyoto Univ, Grad Sch Energy Sci, Sakyo Ku, Kyoto 6068501, Japan
[3] Osaka Univ, Joining & Welding Res Inst, Ibaraki, Osaka 5670047, Japan
来源：
SCRIPTA MATERIALIA | 2015年 / 105卷
关键词：
Oxide dispersion strengthened steel; Friction stir welding; Recrystallization; Grain boundary modification; Coincident site lattice boundary; DYNAMIC RECRYSTALLIZATION; CELLULAR MICROSTRUCTURES; UNIFIED THEORY; EVOLUTION; ALUMINUM; TEXTURE; ALLOY; MORPHOLOGY; STABILITY; RECOVERY;
D O I：
10.1016/j.scriptamat.2015.04.012
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The joint of oxide dispersion strengthened (ODS) ferritic steel and martensitic steel was produced by friction stir welding. The thermo-mechanical process during welding causes recrystallization in the ODS steel and phase transformation in the martensitic steel. In stir zones of both steels, low-angle boundaries significantly convert to high-angle boundaries. The recrystallization in ODS steel is characterized by the increase in the Sigma 3 twin boundary with an almost constant fraction of Sigma 5-Sigma 29 boundaries, while the martensitic steel shows an opposite trend. 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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页码：2 / 5
页数：4
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